Various shots of construction of the Brussels 1957 World Fair, masons, carpenters, cranes, cement mixers, architects. Various shots of buildings under completion and finished buildings. Shot of reflection of imposing building in a fountain, TILT UP to building. Several PANs over Brussels, over fair site. CUs of architects studying plans, of plans themselves. Interior shots of building showing spiral staircase in construction, showing long hallway being built. LS of crane lifting section of roller-coaster trestle, trestle visible at base of crane. Shot of sign "Pavillon de la France", TILT to excavation. Various HASs of model of fair grounds, of model of the "Atomium". Shots of tourists being shown about grounds by guides, construction not yet completed. Shot of the "Atomium" under construction. Several shots of artists' conceptions of the fair grounds, various pavilions, including Canadian pavilion, the "Atomium".